Let's add the French language.

• Create a new file fr.json in the fr folder in the src/lang folder and copy the en.json file code in this file.
• Now you need to add the language in the src/js/app.js file. In the function setLanguage, add the "Switch case" condition as below code and make sure to add the french.jpg file in the src/images/flags folder.

  case "fr":
      document.getElementById("header-lang-img").src = "/static/images/flags/french.svg";
      break;

• You can simply use key attributes in the HTML tag to convert the language text. Example: <div data-key="t-title">This is title.</div>

• Add the below dropdown in the templates/partials/topbar.html file in the language dropdown.

  <!-- item-->
  <a href="javascript:void(0);" class="dropdown-item notify-item language" data-lang="fr" title="French">
      <img src="/static/images/flags/french.jpg" alt="user-image" class="me-2 rounded" height="18">
      <span class="align-middle">French</span>
  </a>